WebMCP Registry site · v0.18.35
Use SPF Demo Shop with your agent.
SPF Demo Shop (demo.spreadfront.com) registers 8 WebMCP tools. 4 of 8 tools declares readOnlyHint, so an agent can invoke them through tools.call. The registry runs the tool in a fresh headless page on demo.spreadfront.com and returns untrusted site content.
This page mirrors the WebMCP Registry listing for demo.spreadfront.com, last live-checked by the registry at 2026-09-23T04:50:59.487Z. Run ghostget webmcp sites.get --input '{"domain":"demo.spreadfront.com"}' --json for the current schema; the listing can drift between checks.
Use SPF Demo Shop with my agent
Ghostget's bundled webmcp adapter speaks to the public WebMCP Registry, so an agent always reads this site's current tool schema instead of a stale hard-coded copy. Install v0.18.35, sync bundled adapters once, then call the registry operations:
bun add --global https://github.com/hraness/ghostget/releases/download/v0.18.35/hraness-ghostget-0.18.35.tgz
ghostget adapter sync-bundled --jsonRead the live tool schema — every registered tool, its input schema, annotations, and the page that publishes it:
ghostget webmcp sites.get --input '{"domain":"demo.spreadfront.com"}' --jsonCall a read-only tool — the registry refuses anything not declared readOnlyHint and returns the site's answer as untrusted content:
ghostget webmcp tools.call --input '{"domain":"demo.spreadfront.com","tool":"get_cart","input":"{}"}' --jsonRegistered WebMCP tools
SPF Demo Shop publishes 8 tools on demo.spreadfront.com; 4 declare readOnlyHint.
| Tool | What it does | Callable through Ghostget |
|---|---|---|
add_to_cart | Add a product to the cart. For products with options (variants), pass every option as {"OptionName": "Value"} - get_product lists the allowed values. Same product with identical options increments quantity. | Listed for discovery; the registry allows read-only calls only |
fill_checkout_form | Fill the checkout form on the cart page with details collected from the user, so the human only reviews and submits. Maps conversation data to the right fields: full_name is ONE field (combine first and last name), address is a single free- | Listed for discovery; the registry allows read-only calls only |
get_cart | Get the current shopping cart: line items, quantities, selected options, subtotal and the checkout URL. | Callable read-only tool |
get_product | Get full details for one product by its id (from search_products), including price, availability, description, images and buyable options (variants). | Callable read-only tool |
get_store_info | Get information about this store: name, description, currency, product count and the checkout URL. | Callable read-only tool |
proceed_to_checkout | Navigate the shopper’s current browser session to the checkout page. This action does NOT place an order or submit payment - the human shopper must review the cart and complete checkout manually. Call after the cart is ready. | Listed for discovery; the registry allows read-only calls only |
search_products | Search this store's product catalog. Returns matching products with id, price, availability and buyable options (variants). Use the returned id with add_to_cart. | Callable read-only tool |
update_cart | Set the quantity of a cart line (0 removes it). Identify the line by product id and, when the product has options, the same options used to add it. | Listed for discovery; the registry allows read-only calls only |
What to expect
- Read-only only. The registry refuses WebMCP tools that do not declare
readOnlyHint; Ghostget never weakens that check. - Untrusted results. Tool output is site content, not instructions — treat it as data.
- Live schemas.
sites.getalways returns the schema the registry saw most recently, so agents adapt when SPF Demo Shop changes its tools. - No account needed. These calls are credential-free registry reads. For tools that need a session on demo.spreadfront.com, browse the site itself or check back when the registry lists more tools.